Prophylactic device



FIG. 1 is a side elevational view of a prophylactic device showing my new design.

FIG. 2 is a side elevational view opposite to that shown in FIG. 1;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a prophylactic device, as shown. 